Answer:
The total monthly fixed cost and the variable cost per hour is $1,540 and $23
The average contribution margin per hour is $27
Explanation:
The computation of the fixed cost and the variable cost per hour by using high low method is shown below:
Variable cost per hour = (High Operating cost - low operating cost) ÷ (High service hours - low service hours)
= ($11,200 - $4,300) ÷ (420 hours - 120 hours)
= $6,900 ÷ 300 hours
= $23
Now the fixed cost equal to
= High operating cost - (High service hours × Variable cost per hour)
= $11,200 - (420 hours × $23)
= $11,200 - $9,660
= $1,540
For computing the contribution margin per hour, first we have to compute the revenue per hour which is shown below:
= Revenue ÷ service hours
= $6,000 ÷ 120 hours
= $50
We know that,
The contribution per hour = Revenue per hour - variable cost per hour
= $50 - $23
= $27